Mechanism for operating doors and steps.



W. M. SMITH. MECHANISM FOR OPERATING DOORS AND STEPS. APPLICATION FILED SEPT. 16, L914.

1 ,1 17,921 Patented Nov. 17, 1914.

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W. M. SMITH. MECHANISM FOB. OPERATING DOORS AND STEPS.

APPLICATION FILED 813F116. 1914.

Patented Nov. 17, 1914.

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C D. N m C m. u n. W 0 n H m a n P s R s T s P 5 R R 0 N s n 1 WARREN M. SMITH, OF

MOOBES, PENNSYLVANIA, ASSIGNOR TO THE J. G. BRILL COM- PANY, OF PHILADELPHIA, PENNSYLVANIA,

A CORPORATION OF PENNSYLVANIA.

MECHANISM FOR OPERATING DOORS AND STEPS.

Specification of Letters Patent.

Application filed September 16, 1914. Serial No. 862,015.

To all whom it may concern Be it known that I, \VARREN M. SMITH, a citizen of the United States, and a resident of Moores, county of Delaware, State of Pennsylvania, have invented certain Improvements in Mechanism for Operat ng Doors and Steps, of which the following is a specification.

The object of my invention is to simplify the construction of the means for operating doors and steps, especially those of a passenger car which are usually actuated in unison, although the invention can be used as a means for operating a door and a step and it can be applied to doors other than those of a passenger car.

In the accompanying drawings: Figure l is a transverse sectional view of the platform of a passenger car, illustrating my 1nvention; Fig. 2 is a vertical sectional View of the operating means on the line a-a, Fig. 3; Fig. 3 is a vertical sectional view on the line bb Fig. 2; Fig. 4 is a perspective view of the handle; Fig. 5 is a sectional view of the upper end of the operating mechan sm, illustrating a modification of the invention; Fig. 6 is a sectional view on the l1ne c-0, Fig. 5, and Fig. 7 is a view illustrating a modification where two doors are to be operated by a single shaft.

Referring to the drawings, 1 is the frame of a passenger car at the platform.

2 is the floor of the platform, supported in the usual manner.

3 is a pivoted door at one side of the platform and -l is a pivoted step below the door so that when the door is opened the step will be lowered and a passenger can either enter or leave the car. Where the door is close to the ground, the step may be dispensed with. In the present instance, the door is mounted on a pivot shaft 5 having its bearings in the frame of the car. The door has a bracket 6 secured to the shaft. At the upper end of the door is another bracket 7 attached to a pivot pin 8 on the door frame. At the lower end of the shaft 5 is a slotted cam arm 9. The step 4 is pivoted at 10 to a bracket 11 and an arm 12 on the step enters the slot in the cam arm so that when the shaft 5 is turned to open the door, the cam arm will cause the step to be lowered and when the door is closed the step will be raised. Located some distance from the door and, in the present instance, at the center of the platform is a standard 13 having a hollow head 11. Extending across this head is a shaft 15 having arms 16 and 17 and between these arms is a handle 18 which projects through a slot 19 in the head 14-. This handle is shaped so as to be readily grasped by the conductor or other operator of the door.

Secured to the under side of the platform is a casing 20 and mounted in the casing is a transverse shaft 21. On this shaft is a bevel gear wheel 22 which meshes with a bevel pinion 23 on a vertical shaft 21, also having its hearings in the casing. On the shaft 24 is an arm 25 which is connected by a rod 26 to an arm 27 on the pivot shaft 5.

The above mechanism is designed to operate a single door and step, but if two doors are to be operated, I preferably mount two arms .25 and 28 on the shaft Fig. 7 to one door and the other arm being connected to the other door. The gear wheel in the present instance, is in the form of a segment and this segment is extended at each side to form arms 29 and 30. The arms 16 are connected by a rod 31 to the arm 29 and the arm 17 is connected to the arm 30 by a rod 32 and this rod is forked at the upper end, as shown in Fig. 3, so as to extend on the outside of the arm 17. These two rods are bent and shaped as shown in Figs. 2 and 3 and extend through the hollow spindle 13.

33 is a hand hold secured to or forming an integral part of the head 14 and is shaped so that it can be grasped by the operator or by a passenger passing the conductors station.

hen the handle is in the position illustrated in Fig. 2, the door is open and the step is lowered, but when the handle is depressed the rods 31 and 32 are moved in opposite directions and the segmental gear 22 turns the shaft 24, which causes the doors to be closed and the steps to be raised. This construction is exceedingly simple and compact and can be economically manufactured.

I preferably make the handle 18 detachable and it is slotted at 36, as shown in Fig. 4, so as to extend over the pivot pin for the rod 32 and the shaft 15. When the conductor, or other operator, leaves his post, he can remove the handle. In some instances, the rods may be dispensed with and the construction illustrated in Figs. 4 and 5 may be used in which the shaft has a segmental gear wheel 3% which meshes with a beveled pinion 35 on a vertical shaft 2% to which the arms are attached. Thehandle 18 is tapered and is adapted to a tapered opening in the hub of the wheel 34.

I claim:

1. The combination in means for operating doors and steps, of a hollow standard arranged to be secured to the floor; a hollow head on the standard; a vertical shaft; a door and step; means connecting the same to the shaft; a transverse shaft in the head; a handle on the shaft projecting through the head; andmeans connecting the horizontal shaft with the vertical shaft so that when the handle is moved the door will be opened or closed.

2. The combination of a hollow standard mounted on the floor; a hollow head at the upper end of the standard; a casing secured to the under side of the floor; a horizontal and a vertical shaft mounted in the casing; gearing between the two shafts; a horizontal shaft in the head; arms on the shaft; rods connecting the arms on the horizontal shaft of the head with the gearing in the casing; and means for turning the shaft.

3,. The combination in means for operating doors; of a standard secured to the floor; a hollow head carried by the standard; a casing secured to the under side of the floor directly under the standard; a vertical shaft mounted in the casing; a horizontal shaft also mounted in the casing; gearing on the horizontal shaft and the vertical shaft; a horizontal shaft mounted in the hollow head; arms on the shaft within the head; rods connecting the arms with the gearing on each side of the center of the horizontal shaft of the casing; a handle secured to the horizontal shaft and the hollow head and extending through a slot in said head so that on the vertical movement of the handle the vertical shaft of the casing will be turned.

l. The combination of means for operating the doors of cars; a platform; a hollow standard mounted on the platform some distance from the door; a hollow head car- Conlsa of this patent may be obtained for five cents each, by addressing the Washington, D. 0.

ried by the standard; a casing located under the platform in line with the standard; a vertical shaft and a horizontal shaft mounted on the casing; gearing between the two shafts; a horizontal shaft in the hollow head; two arms on the shaft; rods extending through the hollow standard and coupling the arms to the gear wheel on the horizontal shaft of the casing, said hollow head being slotted; a handle projecting through the slot and connected to the shaft; a pivotally mounted door; a pivot shaft extending under the platform and having an arm; an arm on the vertical shaft mounted on the casing; and a rod connecting the two arms so that when the handle is depressed the door will be opened and when the handle is raised the door will be closed.

5. The combination in means for operating the doors of cars, of a platform; a door located at one side of the platform; a standard on the platform; a hollow head on the standard; a hollow casing located under the platform and in line with the standard; a vertical shaft and a horizontal shaft mounted in the casing; gearing between the two shafts; a horizontal shaft in the head; arms on the shaft; rods extending through the standard and connecting the arms on the upper horizontal shaft with the arms on the lower horizontal shaft, the head being slotted; a detachable handle extending through the slot and engaging the shaft; and means extending from the vertical shaft of the casing to so that on the'movement of the handle the door will he opened or closed.

6. The combination in means for operating doors, of a standard; a horizontal shaft at one end of the standard; an arm on the shaft having apivot pin; and a detachable slotted handle arranged to engage the pivot pin of the arm and the shaft.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

-WARREN M. SMITH.

Witnesses HENRY C. ESLING, H. F. MCKILLIP.

Commissioner of Patents.

the door mechanism 

